Mercedes S204 Tailgate Seal Gasket Rubber Surround Sealing A2047400678

The Mercedes S204 tailgate seal is an original, factory part from the Door Seals group, designed for a watertight peripheral seal of the rear tailgate. It ensures stable guidance of the rubber profile around the body edges, limiting the ingress of water, dust, and noise into the luggage compartment. Thanks to its design tailored to the S-Class W204 (S204) estate body, it is a precise service solution for discerning Mercedes users.

Specifications and technical data

• SKU: A2047400678
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2047400678
• Substitutable numbers: A2047400678, A 204 740 06 78, A2047400878, A 204 740 08 78, A2047400378, A 204 740 03 78
• Part type: Door Seal
• Category: Door Seals

Purpose and Function of the Tailgate Seal

The presented rear tailgate perimeter seal has been specifically designed for the S204 estate body, where it is responsible for a watertight connection between the tailgate and the body frame. This component:

• creates a continuous barrier against falling rain and spray,
• limits the ingress of dust and dirt into the luggage compartment,
• reduces the penetration of external noise into the vehicle's interior,
• stabilizes the tailgate's position when closed, improving closing comfort.

Thanks to its factory rubber profile and appropriately shaped geometry, the seal works with the original tailgate locks and hinges, maintaining the correct body line and assembly gaps.

Construction and Fit for Mercedes Bodywork

The S204 tailgate seal utilizes a flexible, closed rubber profile that conforms to the bodywork contours. The design includes:

• a perimeter run around the entire edge of the luggage compartment opening,
• the ability to be installed in factory slots and on existing sheet metal edges,
• compatibility with original hardware and plastic interior trim of the luggage compartment.

As an original Mercedes part, the seal maintains the correct material hardness and elasticity, which translates to proper tailgate pressure and even force distribution around the entire perimeter. This allows for the preservation of factory-level sealing and acoustic comfort.

Condition, Service Application, and Benefits of Installation

This part is a used item, offered as a pre-owned component, providing a cost-effective service solution for users seeking original parts at a reasonable price. Replacing a worn or perished seal with an original part of this type allows for:

• reducing the risk of moisture damage to the luggage compartment upholstery and electrical components,
• decreasing air noise at higher speeds,
• improving the operation of the tailgate lock and the perceived quality of closing,
• maintaining technical consistency with other Mercedes bodywork elements.

For workshops and services specializing in the Mercedes brand, using an original tailgate seal facilitates repair consistency and minimizes the risk of fitment issues, which are common with universal aftermarket alternatives.

Integration with Other Body Seals

The rear tailgate seal in the S204 body works in conjunction with other body opening seals, creating a cohesive system of protection against external factors. Replacing this element is particularly recommended when:

• cracks or damage are visible on the seal edges,
• moisture appears in the luggage compartment after heavy rainfall,
• the tailgate requires excessive force to close or, conversely, closes too easily,
• the vehicle has undergone bodywork and paint repairs in the rear section.

Choosing an original seal allows for material consistency with factory door seals and other openings, which is important for both user comfort and long-term resistance to aging.

If you are planning a comprehensive repair or upgrade of the door and tailgate opening area on your Mercedes and need other parts from the same group, such as front door seals, rear door seals, or additional sealing profiles, check the available parts in the Mercedes Door Seals category.

Additional Technical Support

When planning more extensive service work, it is advisable to consider the condition of other vehicle systems, including those responsible for safety. If you are interested in how to consciously choose used components for key vehicle systems, the following guide may be helpful: Second-hand braking systems: how to safely choose discs, calipers, and ABS?. It will help you better understand what to look for when purchasing used parts and how to assess their suitability for further use.